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The spiny dogfish (Squalus acanthias), spurdog, mud shark, or piked dogfish [4] is one of the best known species of the Squalidae (dogfish) family of sharks, which is part of the Squaliformes order. [5] While these common names may apply to several species, Squalus acanthias is distinguished by two spines (one anterior to each dorsal fin) and ...
The Pacific spiny dogfish (Squalus suckleyi) is a common species of the Squalidae (dogfish) family of sharks and are among the most abundant species of sharks in the world. This species is closely related to the Spiny dogfish and for many years they were treated as a single species. [ 4 ]
The spiny dogfish has broken several records in the areas of migration and gestation. This shark tends to be a highly migratory species: one shark was recorded as travelling 8,000 km (5,000 miles) after being tagged in Washington state, United States, and found again later in Japan.
Squalus is a genus of dogfish sharks in the family Squalidae.Commonly known as spurdogs, these sharks are characterized by smooth dorsal fin spines, teeth in upper and lower jaws similar in size, caudal peduncle with lateral keels; upper precaudal pit usually present, and caudal fin without subterminal notch.
The term kitefin shark is also used as the common name for the type species of the family, Dalatias licha. Echinorhinidae: Bramble sharks: 1 2 Bramble sharks are usually benthic fish found in tropical and temperate waters worldwide, while the prickly shark is found in the deep waters of the Pacific Ocean. Their usual prey is small fish ...
Squalomorphi [1] is a superorder of cartilaginous fishes, generally characterized by lacking traits such as an anal fin, nictitating membrane, or suborbital shelves in the cranium.
Millions of prehistoric marine fossils were discovered beneath a California high school over the course of a multi-year construction project. The relics recovered at San Pedro High School included ...
The shortspine dogfish was once seen as a circumglobal species by many authors, including Compagno (1984) and Last & Stevens (1994). [3] [4] However, a series on papers published since 2007 have shown that a number of species synonymized with S. mitsukurii are distinct, and that the Hawaiian population of S. mitsukurii represent a distinct species, the Hawaiian spurdog.